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Kernel+Userland: Support remounting filesystems :^)

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This makes it possible to change flags of a mount after the fact, with the
caveats outlined in the man page.
This commit is contained in:
Sergey Bugaev
2020-05-28 21:12:13 +03:00
committed by Andreas Kling
parent d395b93b15
commit 3847d00727
8 changed files with 58 additions and 0 deletions
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14
Kernel/FileSystem/VirtualFileSystem.cpp
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@@ -91,6 +91,20 @@ KResult VFS::bind_mount(Custody& source, Custody& mount_point, int flags)
return KSuccess;
}
KResult VFS::remount(Custody& mount_point, int new_flags)
{
LOCKER(m_lock);
dbg() << "VFS: Remounting " << mount_point.absolute_path();
Mount* mount = find_mount_for_guest(mount_point.inode().identifier());
if (!mount)
return KResult(-ENODEV);
mount->set_flags(new_flags);
return KSuccess;
}
KResult VFS::unmount(InodeIdentifier guest_inode_id)
{
LOCKER(m_lock);